Possibly undefined symbol for .length

[azihassan]

Desktop (please provide environment info):

• OS: Ubuntu 18.04 64 bits
• IDE: Intellij 2020.2
• Plugin Version 1.25

D compiler and tools (please provide version numbers):

• dmd: 2.093.0
• dub: 1.22.0
• dcd: 0.13.1
• dscanner: 0.10.0-3-g2a1f96f

Describe the problem
I'm getting a "Possibly undefined symbol" warning for the .length property.

void main(string[] args)
{
    args.length.writeln;
}

Screenshots

DCD configuration:

Additional context
Autocompletion works for .length, but the warning is still present.

[SingingBush]

The way to setup the plugin is just to ensure that phobos and druntime are being picked up as sourcepaths when you select DMD as an sdk:

so you're getting auto completion because DCD is aware of phobos/druntime but the plugin itself has not picked those paths up. Also, if they're configured as sourcepaths you will not need to add them as flags to DCD.

[azihassan]

Thanks for the reply. I checked the SDK settings and it turns out that the paths are indeed defined :

But the problem persists. I also tried removing the flags from DCD, rebuilding, restarting Intellij. Am I missing someting ?

[tsbockman]

so you're getting auto completion because DCD is aware of phobos/druntime but the plugin itself has not picked those paths up. Also, if they're configured as sourcepaths you will not need to add them as flags to DCD.

The .length property of built-in slices is not from druntime or phobos; it is a language feature. Check out these sections in the spec: Array Properties and Properties.

Similarly, there are also some unrecognized __traits, like identifier; see Traits.